| A | B |
|---|
| rock | a hard substance composed of one or more minerals or mineralike substances |
| igneous | formed from molten rock |
| sedimenary | formed by the compacting and cementing of sediments or by other non-igneous proccess at the earth's surface |
| sediment | particals of rock or other organic materials that have been carried along and deposited by water and/or wind |
| metamorphic | changed in form as a result of chemical reactions, heat and/or pressure |
| rock cycle | the interrelated processes that cause the continuous changing of rocks from one kind to another |
| extrusive rock | an igneous rock formed from lava and crystallizedat the surface of the earth |
| instrusive rock | an igneous rock formed from magma |
| clastic rock | a sedimentary rock formed from fragments of previously exhisting rocks |
| organic rock | a sedimentary rock that is formed either directly orindirectlyfrom materialthat was once alive |
| chemical rock | a non-clastic sedimentary rockformed by inorganic processes such as evaporation |
| metamorphism | the process in which metamorphic rocks are formed. |
